The main street of Venice is of course the Grand Canal. The best thing we did was buy a vaporetto (water bus) ticket, and ride the canals. This is heading north toward the beautiful Rialto Bridge, probably the most famous bridge in Venice.
The canals are the 'streets' of Venice, and everything is delivered (or removed) by boat. There are hundreds of water taxis, and we saw garbage boats, delivery boats, and ambulance boats (as well as the dozens of gondolas) - sometimes looking like a crash was inevitable! This is the view back down the canal from the bridge.
Some of the hotels on the square keep a band playing in the evening, hoping to entice you in for a very expensive meal. We were there in early October so crowds weren't unreasonable, but this place gets 24 million tourists a year, that's 65,000 a day, mostly concentrated in one square mile between St. Mark's and the Rialto Bridge, and mostly in the summer months.
All of the night shots above were just hand held, bracing myself as best I could to keep vibration to a minimum. Exposures range from a tenth of a second to nearly a full second, so there's a bit of blur if you look closely. I just used trial and error in aperture setting on the camera to get the exposure I wanted. Check out the other street views on: